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Old 09-08-2007, 17:44   #1
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Draining coolant from volvo 2003

I am about due to replace the coolant in my volvo 2003. But damned if I can work out how to drain it. Anyone have any insight into how one is supposed to do this? Any other tips also appreciated.

Thanks.
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Old 09-08-2007, 18:54   #2
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Look on the right hand side (starboard) rear of the block. You'll see a drain valve. To keep the heat exchanger clear on these engines, you need to change the coolant on regular intervals.

Paul L
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Old 09-08-2007, 19:02   #3
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On my VW (Pathfinder) I put a kitty litter pan under the fresh water pump and just pull the coolant hose off the pump. Once it's all out I pump a little air into the fill cap and it seems to force out the remaining fluid.

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Old 09-08-2007, 22:31   #4
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Quote:
Originally Posted by Paul L
Look on the right hand side (starboard) rear of the block. You'll see a drain valve. To keep the heat exchanger clear on these engines, you need to change the coolant on regular intervals.

Paul L
Thaks for the info... I will have a look. What do you mean by "keep the heat exchanger clear"?
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Old 10-08-2007, 09:14   #5
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The coolant you use in the engine is an anti-freeze. It also contains anti-corrosive properties. The heat exchanger on the 200x is a bunch of small tubes that can get junked up with corrosion. The coolant's anti-freeze capability will last for years. Its anti-corrosion capability does not last near as long. So changing the coolant on a regular basis is a good thing. Mine hadn't been done for a long time when I bought the boat and I needed to run a radiator cleaner through the system to get full flow.

Paul L
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Old 23-08-2007, 18:39   #6
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I had a look for the elusive drain valve the other day, but couldn't find anything obvious. Any further clues appreciated... otherwise I'm just gonna find the lowest level hose I can find and disconnect it!

So, is it ok to just use a commercial automobile radiator cleaner to clean up the heat exchanger? I ask because, as far as I know, the coolant in my engine has been there for nearly 2 years.

Again, thanks all for your advice.
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Old 23-08-2007, 21:00   #7
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Weyalan,

I just did mine today (Volvo 2020 B). There's a petcock about halfway down the block on the starboard side, just above the oil filter. It's painted green like everything else.

I dumped the coolant into the bilge and sucked it back out with a wet/dry vacuum.

Steve B.
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Old 24-08-2007, 09:42   #8
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You aren't looking close enough. Go to the starboard side of the engine. Look to the rear 1/3, above the oil pan, there is a pit cock like device that sticks out. It is bronze and needs wrench to open it. It is probably painted green. You can slip a tuibe over the end of it to catch the coolant. It reallly is there.

Paul L
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